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(!!) (Best Pair) 7199 Sylvania NOS 1960's and 1985 same build (12.5ma/9.6ma and 12.3/10.2ma) 1-3% matched

$ 169.99

1 pair) 7199 Sylvania gray plates NOS 1960's and 1985 - same build

1 tube) Sylvania faded printing 1960's

12.5ma Gm=7300 (pentode section) strong

9.6ma Gm=2500 (triode section) strong

1 tube) Sylvania branded Philips 1985

12.3ma and Gm=7100 (pentode section) strong

10.2ma and Gm=2500 (triode section) strong 

 

  

- Bogen BD-212
- Dynaco ST-70, SCA-35
- Ampeg B25, B25B
- Heathkit AA-111
- Stromberg Carlson
- Ampex Concerto 1961
- Scott LK 150

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